Tool for compressing valve-springs.



J. C. REYNOLDS.

TOOL FOR COMPRESSING VALVE SPRINGS.

APPLICATION FILED APR. 12. 1916- 1 $1,669,, Patented May 29, 1917.

a 20' E I H 25 2/ C%Q%Y I MP [H I I WM fiyf 27 6 A 15 II WITNESS WW BY A TTOR/V E V springs of hydrocarbon engines to facilitate JOHN C. REYNOLDS 0F STAMFORD, CONNECTICUT.

TOOL FOR COMPRESSING VALVE-SPRINGS.

Specification of Letters Patent.

Patented May 29, 121?.

Application filed April 12, 1916. Serial no. 90,535.

To all whom it may concern:

Be it known that I, JOHN C. REYNOLDS, acitizen of the United States, residing at Stamford, county of Fairfield, State of Connecticut, have invented an Improvement in Tools for Compressing Valve-Springs, of whichthe following is a specification.

This invention has for its object to provide a simple, inexpensive and thoroughly practical tool for compressing, the valve removal of the valves.

In the accompanying drawingforming a part of this specification,

Figure 1 is a plan view and Fig. 2 an elevation of my novel tool;

Fig. 8 a section on the line 33 in Fig. 2, looking in the direction of the arrows;

Fig. 4 a section on the line 4-4.- in Fig. 2, looking in the direction of the arrows;

Fig. 5 a detail sectional view on an enlarged scale, illustrating the longitudinal adj ustability of the lever;

Fig. 6 an inverted plan view showing the base of the standard;

Fig. 7 a view illustrating the operation of my novel device in compressing a spring;

Fig. 8 a view corresponding with Fig. 2, illustrating a variant form of the invention- Fig. 9 a section on the line 99 in Fig. 8, looking in the direction of the arrows;

Fig. 10 a section on the line 1010 in Fig. 8, looking in the direction of the arrows, and

Fig. 11 is a detail plan view corresponding with Fig. 8.

My novel tool comprises three parts only, a standard, a fulcrum, and a lever. As tools of this kind are required to be used in connection with various sizes and makes of engines, I have provided two simple adjustments which adapt the tool for use 1n connection with any of the various types and makes of hydrocarbon engines now upon the market. 20 denotes the lever which is provided with a U-shaped head 21 adapted to straddle a valve stem. The lever is provided on its under side with notches 22, either of which is adapted to engage an angular lug 23 on the fulcrum 24. The fulcrum is provided with an eye 25 through which the lever may slide freely and with a threaded shank 26 which engages a correspondingly threaded socket in the standard 27. The design or configuration of the lever and standard are not essential features of the invention. I preferably secure an efiicient combination of strength and lightness by making the lever in cross section, substantially as shown in Fig. 3. The base of the standard is roughened to assist in holding it in place, as shown in Fig. 6, and may be given the configuration shown in Fig. 6 or if-preferred the configuration shown in Fig. 10, either of which might be preferable for special uses, the latter form being cut away upon one side, as at 37, which enables it to be placed close to the tappet guide.

In the form illustrated in Figs. 8, 9 and 11, T have made the lever extensible by provviding it with a sliding sleeve 28 having a slot and pin connection with the lever proper. This enables the lever to be lengthened and gives greater power for heavy work. In this form, the head is shown as provided with a shank 29 which is pivoted to the end of the lever. This form is adapted for use in connection with types of en gines in which it is diflicult to obtain direct access to the valve stem.

The operation of my novel tool will be clearly understood from Fig. 7, in which 30 denotes the valve chamber of an engine, 31 the valve stem, 32 the valve spring, 83 the tappet, and 34 the tappet guide. The spring bears against the valve chamber and against a spring seat 35 which has a sliding fit on the valve stem, and is held in place by a key 36 engaging a slot in the valve stem.

The operation of compressing a spring with my novel tool is as follows: The fulcrum is adjusted to a convenient height above the part upon which the standard rests by rotation of the shank of the fulcrum or the standard, and the head is placed in engagement with the valve stem under the spring seat. The lever may then be raised slightly to disengage the teeth from the lug and the standard and fulcrum moved backward or forward to a convenient position. The spring is then compressed by pressing the rear end of the le ver downward, as shown in Fig. 7 sufliciently to raise the spring seat away from the key, which is then removed, after which the tool is removed and the spring allowed to drop down over the valve stem and tappet. The valve may then be removed in the usual manner by lifting it out of the valve chamber. In practice, with my novel tool, a valve may be removed in less time than it takes to describe the operation.

Having thus described my invention, I claim:

1. A tool of the character described comprising a lever having a U-shaped head to engage a valve stem and notches in its under side, a fulcrum having a lug to engage either of the notches and a threaded shank, and a standard having a threaded socket engaged by the shank.

2. A tool of the character described comprising a standard, a fulcrum having a shank carried by said standard and adjustable vertically therein, and a longitudinally adjustable valve-engaging lever positioned to engage the fulcrum, said fulcrum having means for guiding said lever.

3. A tool of the character described comprising a lever having means for engaging a valve stem and notches in its under side, a fulcrum having a lug to engage either of the notches, an eye through which the lever may be passed freely and a threaded shank, and a standard with which the shank has threaded engagement.

4-. A tool of the character described comprising a valve-engaging lever provided with notches in its underside, a fulcrum having a lug to engage either of said notches, said fulcrum having a threaded shank and a guide for said lever, a standard with which the shank has threaded engagement, and a slidable extension sleeve having a pin and slot connection with said lever.

5. A tool of the character described comprising a standard, a fulcrum carried thereby, a lever engaging said fulcrum to swing in one plane, and a U-shaped head pivoted to one end of said lever to swing in a plane at right angles to the movement of the lever.

6. A tool of the character described comprising a lever having a U-shaped head, a sliding sleeve thereon whereby the lever is made extensible, a fulcrum having a threaded shank, the lever being longitudinally adjustable relatively to the fulcrum and a standard with which the shank has threaded engagement.

7. A tool of the character described comprising a lever having a U-shaped head pivoted thereto to swing in the horizontal plane, a fulcrum, the lever being longitudinally adjustable relatively to the fulcrum, a threaded shank on the fulcrum and a standard with which the shank has threaded engagement.

In testimony whereof I affix my signature.

JOHN C. REYNOLDS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

